The studies concern particular courses and participants, not a technique guaranteed to make you sleepy tonight. Identify whether your question is falling asleep, waking in the night, or daytime tiredness before reading the results.
Name the sleep problem you want to understand
Time to fall asleep, time awake during the night, and tiredness the next day are not interchangeable. Nor are a sleep questionnaire and a movement-based sleep measurement. A warm or relaxed feeling after practice is not proof of improved sleep.
A 12-week Baduanjin study
The 2012 Taiwanese study recruited adults aged 60 or older who lived independently and had not exercised regularly in the previous six months. Of 202 people screened, 87 were eligible and 55 completed the study: 27 in the Baduanjin group and 28 controls. [1]
The course lasted 12 weeks and used the Pittsburgh Sleep Quality Index, a self-report questionnaire. A difference reported by week four is a study observation, not a deadline for beginners. This English review checked the indexed abstract, not the full paper.
Tai chi: course results and a later follow-up
Siu and colleagues randomized 320 adults aged 60 or older with chronic insomnia in Hong Kong. The tai chi and conventional exercise groups attended three 60-minute sessions weekly for 12 weeks; another group received no additional intervention. [3]
Compared with control, tai chi was associated with 3.4 percentage points higher sleep efficiency and about 13.3 fewer minutes awake after falling asleep at the end of the course. At the 24-month follow-up after the course, the corresponding differences were 6.2 points and 27.1 minutes. These were group averages from actigraphy, not a promise of that much extra sleep for an individual.
At the end of the course, there was no clear difference between tai chi and conventional exercise on the main objective sleep outcomes. Some participants continued activity, and 268 completed follow-up. The study does not show what happens if everyone stops practicing after 12 weeks.
Keep a useful, simple record
Choose one concern to describe consistently, such as repeated waking and its effect the next day. Note the course and actual practice separately from time spent watching. Changes in schedule, illness, or other care matter too; a personal note cannot isolate what caused a change.
A research course is not an instruction to add strenuous or unfamiliar practice at bedtime. The NHS sleep page discusses regular habits and seeking help when difficulties persist. [2]
Do not wait for a practice milestone to seek help
If sleep problems persist for months, changes in habits have not helped, or daily life is becoming hard to manage, seek professional advice. The NHS lists these as reasons to consult a clinician. [2] A hundred practice days is a learning record, not a treatment waiting period.
References and sources
- Chen MC, Liu HE, Huang HY, Chiou AF. The effect of a simple traditional exercise programme (Baduanjin exercise) on sleep quality of older adults: a randomized controlled trial. Int J Nurs Stud. 2012;49(3):265–273.
DOI：10.1016/j.ijnurstu.2011.09.009
Indexed abstract checked: 55 completers, 27/28 groups, 12 weeks, self-reported sleep. Full paper not read in this English pass. Checked 2026-10-20.
- NHS. Insomnia.
NHS insomnia page read for persistent sleep difficulties and impact on everyday life. No individualized treatment advice drawn from this page. Checked 2026-10-20.
- Siu PM, et al. Effects of Tai Chi or Exercise on Sleep in Older Adults With Insomnia: A Randomized Clinical Trial. JAMA Netw Open. 2021;4(2):e2037199.
DOI：10.1001/jamanetworkopen.2020.37199
Full text checked: 320 adults aged 60 or older, 12-week classes and 24-month post-course follow-up. Continued activity and losses to follow-up limit interpretation. Checked 2026-10-20.
